Results 1 to 10 of about 888,378 (285)
We review origins and main properties of the most important bracket operations appearing canonically in differential geometry and mathematical physics in the classical, as well as in the supergeometric setting. The review is supplemented by some new concepts and examples.
Grabowski, Janusz
openaire +4 more sources
Introduction: The orthodontic appliances have been known to accelerate enamel loss due to various reasons. Since there are few studies supporting the role of the nano-HAP in the mineralization of the demineralized tooth surfaces, the current study ...
Sahithi Samineni +5 more
doaj +1 more source
Introduction: Stainless steel brackets are often used in orthodontic treatment. Chromium is one of the stainless steel bracket elements that increases corrosion resistance. Chromium ions’ release can cause allergic reactions.
Aria Fransiska +2 more
doaj +1 more source
AbstractWe consider the double field formulation of the closed bosonic string theory, and calculate the Poisson bracket algebra of the symmetry generators governing both general coordinate and local gauge transformations. Parameters of both of these symmetries depend on a double coordinate, defined as a direct sum of the initial and T‐dual coordinate ...
Davidović, Ljubica +2 more
openaire +3 more sources
We introduce \textit{Kaestner brackets}, a generalization of biquandle brackets to the case of parity biquandles. This infinite set of quantum enhancements of the biquandle counting invariant for oriented virtual knots and links includes the classical quantum invariants, the quandle and biquandle $2$-cocycle invariants and the classical biquandle ...
Kobayashi, Forest, Nelson, Sam
openaire +3 more sources
The aim of this study was to evaluate the perception of periodontal pain in patients treated with either fixed multibrackets or removable alignment systems with a monthly follow-up over a period of twelve months.
Silvia Alcón +5 more
doaj +1 more source
A Comparative Evaluation of Space Closure Rate Between Newer Generation Ceramic Brackets and Conventional Straight Wire Appliances [PDF]
Background: With the emerging concept of aesthetics in orthodontics, ceramic brackets play a major role especially in the anterior region of the dental arch.
John Jr +5 more
doaj +1 more source
OBJECTIVE: To evaluate the effects of different adhesion promoters, namely, Enhance LC, Ortho Solo, Assure Universal Bonding Resin and deproteinizing agents such as 5.25% NaOCl, 10% papain gel on the shear bond strength of orthodontic brackets ...
Priya Sharma +3 more
doaj +1 more source
Estimation of Release of Nickel and Chromium by Indian Made Orthodontic Appliance in Saliva [PDF]
Introduction: With increasing use of Indian made orthodontic materials, need was felt to know nickel and chromium release from these material. Materials and Methods: This study was conducted on simulated appliances consisting of brackets (022’’Roth ...
Sandeep Parashar +4 more
doaj +1 more source
Die Textgliederung in Christian Pudors Grammatik (1672)
Christian Pudor's grammar book has not received a lot of attention, despite its importance as the first German grammar book, which gives a syntactically based theory on punctuation.
Jana Adamusová, Karsten Rinas
doaj +1 more source

